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#1
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posted to rec.boats.cruising
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just me wrote:
How many here have one or both of these and have actually used them? Never used one for real in a full storm, but years ago did experiment to devise tactics & found them all but useless if not outright dangerous. The boat will still lay beam on almost no matter how big the sea anchor is; but in the moderate conditions we tested a 32ft yacht, well offshore it provided a violent snubbing. No wonder books regularly report they "fail" & probably it's just a well. Most boats even high wooded motor boats, are safest just left alone to lie a hull in all but the most extreme conditions & after that to turn & run is about all that's left; then & only then in my view would a sea anchor be of some use just to slow you, also the saloon carpet or a sail laced to the line slightly aft will stop any breaking water reaching you. K |
#2
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posted to rec.boats.cruising
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Hi K
Read the book titled Sea-Anchors and Drogues by Hinz. Your frustrating experiences are described in the book and are a common reason why people get frustrated and abandon the sea anchors and drogue idea. The problems you described are remedied easily. But then again, you may never have a reason to use those tools. Bob |
#3
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posted to rec.boats.cruising
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Bob wrote:
Hi K Read the book titled Sea-Anchors and Drogues by Hinz. Your frustrating experiences are described in the book and are a common reason why people get frustrated and abandon the sea anchors and drogue idea. The problems you described are remedied easily. But then again, you may never have a reason to use those tools. Bob Thanks for that Bob I'll have a snoop. It's been my experience that the difficulties are bad enough when the conditions are tolerable, but I'd be worried in a real situation. However I take your point & will do some reading, thanks again K |
#4
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posted to rec.boats.cruising
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My experience with motor boats is that when they lose power they always
face beam to the seas. Larger boats with deep keels take longer to assume this position, but they all seem to get there quick enough. Some say the right wave equal to the beam of the boat will flip it over. Neither of my boats would survive that, and I would probably have just enough time to deploy the EPIRB and go over the side before they sank. My understanding of the distinction between drogues and sea anchors is that drogues go over the stern to keep a sailboat from going too fast down the face of a wave. Sea anchors are deployed from the bow (from powerboats anyway) to keep the boat facing the waves in the only position they can handle big water. The boats only move at 1 - 1.5 knots in this condition. If I deployed either of my sea anchors from their respective boats' stern in any kind of seas, they would be pooped and sink. No one that I've read recommends deployment of a sea anchor from anyplace other than the bow of a powerboat. The sea anchor has to be big enough to stop the boat and hold it facing the waves. This takes a huge parachute. It is hooked to your ground tackle and you may need 300' of rode. Having some chain in there to provide a catenary effect is recommended. And you have to continually watch for chafing. This process involves considerable stress on the point the rode connects to the boat. One needs to be able to add a little length (you probably aren't going to be shortening it any) and have old fire hose, rags or something else where the rode meets the fairleads, hawsehole, or whatever. And if you pay attention to the weather and nothing fails on your boat, you've wasted the cost of the sea anchor, just like all that money you've spent on insurance over the years. The only real difference is that if the **** really hits the fan and you really need this device, you get to collect instead of your beneficiaries. Capt. Jeff |
#5
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posted to rec.boats.cruising
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Tamaroak wrote:
My experience with motor boats is that when they lose power they always face beam to the seas. Larger boats with deep keels take longer to assume this position, but they all seem to get there quick enough. Some say the right wave equal to the beam of the boat will flip it over. The rule of thumb is a breaking wave one third the beam of the boat is dangerous. (Heavy Weather Sailing) Neither of my boats would survive that, and I would probably have just enough time to deploy the EPIRB and go over the side before they sank. My understanding of the distinction between drogues and sea anchors is that drogues go over the stern to keep a sailboat from going too fast down the face of a wave. Sea anchors are deployed from the bow (from powerboats anyway) to keep the boat facing the waves in the only position they can handle big water. The boats only move at 1 - 1.5 knots in this condition. If I deployed either of my sea anchors from their respective boats' stern in any kind of seas, they would be pooped and sink. No one that I've read recommends deployment of a sea anchor from anyplace other than the bow of a powerboat. I think drogues and sea anchors are different designs of devices for the same purpose. You can rig either off the bow or stern or one of the quarters. To me the drogue is less drag than a sea anchor and serves more to slow the boat while the sea anchor trys to stop the boat. That is why drogues are more likely rigged from the stern (to slow the boat) and sea anchors from the bow (to stop the boat or minimize drift). If you rig a drogue from the bow you risk damaging the rudder with the continued backward movement of the boat. If you rig a sea anchor from the stern you risk waves breaking into the cockpit of the stationary boat. The sea anchor has to be big enough to stop the boat and hold it facing the waves. This takes a huge parachute. It is hooked to your ground tackle and you may need 300' of rode. Having some chain in there to provide a catenary effect is recommended. And you have to continually watch for chafing. This process involves considerable stress on the point the rode connects to the boat. One needs to be able to add a little length (you probably aren't going to be shortening it any) and have old fire hose, rags or something else where the rode meets the fairleads, hawsehole, or whatever. The Jordan series drogue seems to be the hot setup these days. And if you pay attention to the weather and nothing fails on your boat, you've wasted the cost of the sea anchor, just like all that money you've spent on insurance over the years. The only real difference is that if the **** really hits the fan and you really need this device, you get to collect instead of your beneficiaries. Capt. Jeff |
#6
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posted to rec.boats.cruising
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On Sun, 11 Dec 2005 10:08:31 -0600, "just me"
wrote: How many here have one or both of these and have actually used them? I don't have either, or any practical opinions about how to use them. However, the December Cruising World has several relevant articles and some references. Much as I love surfing, the steering can get tiring in the big stuff. I can imagine offshore conditions where I would welcome some drag to work against the stern spinning out, especially if I had already had enough fun. Ryk |